2-Formyl-3-hydroxy-5-methoxy-6-methyl-benzoic acid 3-((R)-1-methoxycarbonyl-2-tritylsulfanyl-ethylcarbamoyl)-propyl ester 在
三乙基硅烷 、
三氟乙酸 作用下,
反应 2.0h,
以64%的产率得到(R)-15-hydroxy-13-methoxy-12-methyl-6,11-dioxo-3,4,5,6,7,8,9,11-octahydro-1 H-10,2,5-benzoxathiaazacyclotridecine-4-carboxylic acid methyl ester